Weldless elevator link



June 23, 1931. G. w. MOORE 1,810,978

WELDLESS ELEVATOR LINK Filed Sept. 23, 1929 I/V Vi/V TOR. Giana: M110071;. BX X ITTOHMEX Patented June 23, 1931 UNITED STATES GEORGE w.MOORE, or LONG BEACH, CALIFORNIA WELD-LESS nLnvA'ron LINK originalapplication filed November 18, 1927, Serial No. 234,228. Divided andthis application filed September 23, 1929.

An object of my invention is to provide a link for tubing or casingelevators which is simple to manufacture, and one which will not readilybreak under severe strain. Here- ;tofore elevator links have been formedby bending a rod at its center, the free ends then being broughttogether and welded, the

' joint thus occurred at the point where the hook engaged the link, andunder severe strain this weld would frequently break. The breaking ofthe link is extremely danger one to the workmen, and also may severelydamage the well, by reason of the fact that the tubing or casing dropsdown into the hole.

Another object of my invention is to provide a weldless link which isformed with a very few operations, such operations being simple andquickly performed.

A further object of invention is to provide a weldless link with a handgrip thereon so that the operator can more readily grasp and manipulatethe link.

Other objects, advantages and features of invention may appear from theaccompanying drawings, the subjoined detailed descrip tion and theappended claims. I

This application is a division of my copending application on \Veldlesselevator link, Serial Number 234,228, filed November 18, 1927.

In the drawings: 7

Figure 1 is a side elevation of the rod from which the link is made.

Figure 2 is a side elevation of the rod in the next stage ofmanufacture. V

Figure 3 is a side elevation of the rod in the third step of completion.

Figure l is a plan view of the completed rod.

Figure 5 is a side elevation of the same.

Figure tl is a side elevation of my links in position on an elevator.

Referring more particularly to the drawings, my weldless rod is formedin a series of steps starting with a rod 1, of substantially uniformdiameter through its length. This rod being then moved through therollers forming the structure as shown in Figure 2,

consists of a central circular cross section 2,

Serial No. 394,671. I

theends 3, 4, being'of substantially the same diameter as the rod 1,with which I-start.

During this rolling operation, the rod is elongated to the requiredlength, which length varies from 6 feet to 8 feet, more or less. Therolling operation is socontrolled that each rod{ is made exactly thesame length; this insures a uniform strain onthe two links which supportthe elevator.

The next step consists in flattening the ends 3, 4, as shown at .5, 6.Thecentral section'2 remains undisturbed. The next operation consists incutting the openings 7, 8 to form the eyes 9, 10. The Opening 7, whichextends over the elevator lugs is smaller'in size than the opening 8,which is engaged by the block hook. That is the opening 7, is smaller indimension along-the longitudinal axis of the'link than the openmg 8. J

V The upper endof the eye 10 is flattened as at 11, and is bent upwardlyat an angle.

The purposefo-f the flattening is to provide more metal along the lineof greatest strain,

and the bending is to enableithe two links to fit more closely" togetherwhen in useo an elevator as shown in Figure 6. I

The central:- section 2 tapers gradually outwardly into the'eyes 9, 10,so'thatno abrupt angles are formed across whicha break can occur. Thegradual, tapering'distributes the strain more equally and there is lesslikelihood of a" fracture occurring at the point. where the eyes, andthe central section'come together.

It is obvious that the above described method can be accomplished byforging the rod into shape as well as by rolling the same, and also itmay be desirable to make the end I 3 slightly smaller in diameter thanthe end 34 4, by reason ofthe fact that the eye 9 is above thefloor ofthe derrick on a specially provided platform, and as the elevator passeshim, he reaches out and grasps the links to pull the pipe over into therack. To provide a convenient hand grasp, a pair of loops 1212 areformed one on either end if of the link, and these loops may be eitherwelded to the link or may be integrally formed thereon during themanufacturing process. A cable or rod 13, or any other rigid or flexiblemember, is secured to both of the loops and extends between them, thusforming a hand grasp for the operator so that the links may be morereadily manipulated.

In the rolling operation, and in the cut- 7 ting of the eyes 910, it isdesirable that the cross sectional area of the central section 2 beabout the same as the sum of the cross sectional area of both sides ofthe loop,

thus making all parts of the link substantially the same in tensilestrain.

Having described my invention, I claim:

1. A weldless elevator link for oil well elevators formed of a singleiece of metal, said link comprising a straig t central section, enlargedends on said piece, eyes'cut in said enlarged ends, a loop on said linkon both ends thereof and a hand grasp secured to said loops.

2. A weldless elevator link for oil well elevators formed of a singlepiece of metal, said link comprising a straight central section,enlarged ends on said piece, eyes out in said enlarged ends andhandlgrasp means extending substantially the lengthof said link, andmeans securing said hand grasp means to the link.

3. A weldless elevator link for oil well elevators formed ofa singlepiece of metal, said link comprising a straight central section,enlarged ends on said piece, eyes'cut .in said enlarged ends, a loop onsaid link on both ends thereof anda cable secured to said loops wherebya hand grasp is provided.

4:. A weldless elevator link for oil well elevators formed of a singlepiece of metal, said link comprising a straight central section,enlarged ends on said piece, eyes cut in said enlarged ends, one of saidenlarged ends being flattened and bent at an angle with thecentralsection thereof, hand grasp means extending substantially thelength of said link, and means securing saidlink and the hand graspmeans. a

In testimony whereof, I affix my signature.

GEORGE W. MOORE.

